Evaluation of climate change impact on groundwater recharge in groundwater regions in Taiwan

Shih Jung Wang, Cheng Haw Lee, Chen Feng Yeh, Yong Fern Choo, Hung Wei Tseng

研究成果: Article同行評審

摘要

Climate change can directly or indirectly influence groundwater resources. The mechanisms of this influence are complex and not easily quantified. Understanding the effect of climate change on groundwater systems can help governments adopt suitable strategies for water resources. The baseflow concept can be used to relate climate conditions to groundwater systems for assessing the climate change impact on groundwater resources. This study applies the stable baseflow concept to the estimation of the groundwater recharge in ten groundwater regions in Taiwan, under historical and climate scenario conditions. The recharge rates at the main river gauge stations in the groundwater regions were assessed using historical data. Regression equations between rainfall and groundwater recharge quantities were developed for the ten groundwater regions. The assessment results can be used for recharge evaluation in Taiwan. The climate change estimation results show that climate change would increase groundwater recharge by 32.6% or decrease it by 28.9% on average under the climate scenarios, with respect to the baseline quantity in Taiwan. The impact of climate change on groundwater systems may be positive. This study proposes a method for assessing the impact of climate change on groundwater systems. The assessment results provide important information for strategy development in groundwater resources management.

原文English
文章編號1153
期刊Water (Switzerland)
13
發行號9
DOIs
出版狀態Published - 2021 五月 1

All Science Journal Classification (ASJC) codes

  • 地理、規劃與發展
  • 生物化學
  • 海洋科學
  • 水科學與技術

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